63 lines
1.8 KiB
C
63 lines
1.8 KiB
C
#include <c_Mutex.h>
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c_err_t c_Mutex_Init(c_Mutex_t* mutex) {
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if (!mutex) return C_ERR_FAIL;
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#if defined(PLATFORM_WINDOWS)
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// InitializeCriticalSection 不会失败，但 InitializeCriticalSectionAndSpinCount 可能会
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// 工业级推荐直接使用此 API，性能优秀
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InitializeCriticalSection(&mutex->handle);
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mutex->is_initialized = C_TRUE;
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return C_ERR_OK;
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#elif defined(PLATFORM_POSIX)
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// POSIX 默认是 PTHREAD_MUTEX_DEFAULT (不可重入锁)
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if (pthread_mutex_init(&mutex->handle, NULL) == 0) {
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mutex->is_initialized = C_TRUE;
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return C_ERR_OK;
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}
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return C_ERR_FAIL;
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#endif
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}
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void c_Mutex_Destroy(c_Mutex_t* mutex) {
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if (!mutex || !mutex->is_initialized) return;
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#if defined(PLATFORM_WINDOWS)
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DeleteCriticalSection(&mutex->handle);
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#elif defined(PLATFORM_POSIX)
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pthread_mutex_destroy(&mutex->handle);
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#endif
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mutex->is_initialized = C_FALSE;
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}
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void c_Mutex_Lock(c_Mutex_t* mutex) {
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if (!mutex || !mutex->is_initialized) return;
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#if defined(PLATFORM_WINDOWS)
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EnterCriticalSection(&mutex->handle);
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#elif defined(PLATFORM_POSIX)
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pthread_mutex_lock(&mutex->handle);
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#endif
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}
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c_bool_t c_Mutex_TryLock(c_Mutex_t* mutex) {
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if (!mutex || !mutex->is_initialized) return C_FALSE;
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#if defined(PLATFORM_WINDOWS)
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// TryEnterCriticalSection 返回非 0 表示成功
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return (TryEnterCriticalSection(&mutex->handle) != 0)?C_TRUE:C_FALSE;
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#elif defined(PLATFORM_POSIX)
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// pthread_mutex_trylock 返回 0 表示成功
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return (pthread_mutex_trylock(&mutex->handle) == 0)?C_TRUE:C_FALSE;
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#endif
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}
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void c_Mutex_UnLock(c_Mutex_t* mutex) {
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if (!mutex || !mutex->is_initialized) return;
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#if defined(PLATFORM_WINDOWS)
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LeaveCriticalSection(&mutex->handle);
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#elif defined(PLATFORM_POSIX)
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pthread_mutex_unlock(&mutex->handle);
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#endif
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} |